Proportional Directional Valve 4WRZE32W9-520-7X/6EG24N9EK31/A1D3V - Bosch Rexroth R901008575

The job is metering a large flow without steps: 520 l/min nominal flow in size 32, a flow ceiling of 1600 l/min and up to 350 bar operating pressure. What sets this unit apart within the 4WRZ(E) range is the FKM seal set fitted in place of the usual NBR parts.

Key benefits

• FKM seals instead of NBR, rated for HL hydraulic fluid
• 520 l/min nominal flow in size 32, flow ceiling 1600 l/min
• 350 bar maximum operating pressure on connection diagram ISO 4401-10-09-0-05
• Command value ±10 V at the on-board electronics, 24 VDC supply through a 7-pole connector (6 + PE) to EN 175201-804
• Internal pilot oil supply with external pilot oil return, pressure reducing valve in the pilot stage
• 43.6 kg weight, spool symbol W9 with 3 switching positions and 4 ports

Applications

Typical duty is in presses, test rigs and forming lines where a large cylinder has to travel at a defined speed. The concealed auxiliary actuation helps during commissioning and fault finding while the electronics are not yet enabled. The FKM build is the choice when the oil stays warm in continuous operation.

Manufacturer

Bosch Rexroth, material number R901008575. The valve carries UKCA conformity to SI2016/1091 for electromagnetic compatibility. Further data is in data sheet RE 29115 for the pilot-operated proportional directional valve and in the overview RE 07600-B.